DO2 in Thames waste!

Analytical Technology  has been awarded a new three-year framework agreement by Thames Water, seeing off eight competitors during the bid process. The new agreement will see Analytical Technology installing its optical dissolved oxygen monitors across multiple Thames Water wastewater treatment works in order to improve process control. This new framework builds on the existing relationship between the organisations and demonstrates Analytical Technology’s commitment to servicing the British water industry.

During the bid, which involved nine competitive instrumentation providers, Thames Water was impressed by Analytical Technology’s Q45D-ODO monitor’s capability as well as the commercial services offered by the vendor. Analytical Technology was required to meet a rigorous vendor assessment standard which showed that the company had provided excellent customer support for their disinfection monitors already installed within Thames Water. Analytical Technology also demonstrated capital cost savings as well as project and whole-life savings, which will be achieved through lower maintenance and reduced cost for spares.

Dissolved oxygen (DO) is one of the most critical parameters in the activated sludge process and tighter consent targets now mean that utility companies including Thames Water need to review instrumentation to ensure that all wastewater treatment works are fully compliant. Analytical Technology’s optical dissolved oxygen monitor has been designed to provide reliable DO control while keeping maintenance to a minimum. The monitor is based on fluorescence quenching technology and provides continuous monitoring with virtually no servicing required.

Conventional oxygen sensors are often affected by process coating and any material that slows the diffusion of oxygen into the reaction cell will cause an error in the oxygen reading. Unlike traditional dissolved oxygen monitors, Analytical Technology’s Q45D-ODO contains an Auto-Clean function which generates a series of high pressure air blasts to remove contaminants from the face of the sensor and eliminate errors caused by fouling. The Q45D-ODO’s Auto-Clean capability will enable Thames Water to achieve continuous and reliable DO measurement without the risk of sensor fouling.

Garry Tabor, Sales Director at Analytical Technology, comments: “Dissolved oxygen monitoring is an essential process for water utility companies such as Thames Water. Analytical Technology supplies all Thames Water disinfection monitors, and its proven supply record over the years of the successful partnership means this new agreement reinforces our strong position as leading instrumentation providers within the UK water industry.”